#region The MIT License
// The MIT License
// 
// Copyright (c) 2009 octalforty studios
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion
using System;
using System.IO;
using System.Reflection;

using NUnit.Framework;

using octalforty.Componento.ComponentModel.Caching;
using octalforty.Componento.ComponentModel.Installation.FileSystem;

namespace octalforty.Componento.Tests.Componento.ComponentModel.Caching
{
    [TestFixture()]
    public class CacheManagerServiceTestFixture
    {
        #region Private Fields
        private CacheManagerService cacheManager;
        #endregion

        [SetUp()]
        public void SetUp()
        {
            cacheManager = new CacheManagerService();
            cacheManager.DatabaseRootDirectory =
                Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
            cacheManager.FileSystemManager = new FileSystemManagerService();

            string databasePath = Path.Combine(cacheManager.DatabaseRootDirectory, "componento.cache.db");
            if(File.Exists(databasePath))
                File.Delete(databasePath);
            
            cacheManager.OnImportsSatisfied();
        }

        [Test()]
        public void AddAndGet()
        {
            cacheManager.Add("cached.item", new byte[] { 1, 2, 3 });
            Assert.AreEqual(new byte[] { 1, 2, 3 }, cacheManager.Get("cached.item"));
        }

        [Test()]
        public void AddEntriesWithDuplicateKeyAndGet()
        {
            cacheManager.Add("cached.item", new byte[] { 1, 2, 3 });
            cacheManager.Add("cached.item", new byte[] { 3, 2, 1 });
            Assert.AreEqual(new byte[] { 3, 2, 1 }, cacheManager.Get("cached.item"));
        }

        [Test()]
        public void AddAndRemoveGet()
        {
            cacheManager.Add("cached.item", new byte[] { 1, 2, 3 });
            cacheManager.Remove("cached.item");

            Assert.IsNull(cacheManager.Get("cached.item"));
        }

        [Test()]
        public void AddAndExists()
        {
            cacheManager.Add("cached.item", new byte[] { 1, 2, 3 });
            Assert.IsTrue(cacheManager.Exists("cached.item"));
        }

        [Test()]
        public void GetReturnsNullOnNonExistingKey()
        {
            Assert.IsNull(cacheManager.Get("cached.item"));
        }

        [Test()]
        public void AddAndGetCacheEntryInfo()
        {
            cacheManager.Add("cached.item", new byte[] { 1, 2, 3 });
            CacheEntryInfo cacheEntryInfo = cacheManager.GetCacheEntryInfo("cached.item");

            Assert.IsTrue(DateTime.Now.Subtract(cacheEntryInfo.UpdatedOn).TotalMinutes < 1.0);
            Assert.AreEqual(3, cacheEntryInfo.Length);
            Assert.AreEqual(new byte[] { 1, 2, 3 }, cacheEntryInfo.Content);
        }

        [Test()]
        public void GetCacheEntryInfoReturnsNullOnNonExistingKey()
        {
            Assert.IsNull(cacheManager.GetCacheEntryInfo("cached.item"));
        }

        [Test()]
        public void ExistsReturnsFalseOnNonExistingKey()
        {
            Assert.IsFalse(cacheManager.Exists("cached.item"));
        }
    }
}
